CVE-2026-106253

chromium-browser: Incorrect authorization in Extensions

Published Oct 6, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Incorrect authorization in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4833-1 chromium security update
Debian DSA Debian DSA DSA-6553-1 chromium security update
History
Type Values Removed Values Added
Title chromium-browser: Incorrect authorization in Extensions
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Chrome Extension Unauthorized Cross‑Origin Data Access
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Chrome Extension Unauthorized Cross‑Origin Data Access
Type Values Removed Values Added
Description Incorrect authorization in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Medium)
Weaknesses CWE-863
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
Oct 7, 2026, 10:11 AM
Reserved
Oct 6, 2026, 4:33 PM
Status
Analyzed
Published
Oct 6, 2026, 7:17 PM
Modified
Oct 7, 2026, 1:12 PM
Severity
Moderate
Public date
Oct 6, 2026, 6:41 PM